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+/- tolerance - not equal

Hello,

 

I was wondering if anyone can provide examples or explain how to define a +/- tolerance that is not equal on both sides

My tolerance is -2/ +4.  My test point is 245.00 ohms. The min/max will be 243.00 - 249.00.  How can I write the code to check for these tolerances?

 

Thanks

3 comments

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Michael J.

That would be coded as:

MEMC 245.00Z -2U +4U

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Dale Chaudiere

It depends upon whether it is a sourcing reference (e.g. 5522A) calibrating a measuring DUT (e.g. DMM), or a measuring reference (e.g. 3458A and 8508A) calibrating a sourcing DUT (e.g. 4-20 mA output on a process calibrator).

I believe the calculation in MET/CAL is UI - SA.  Therefore, dependin upon which situation you are modeling above, the asymetrically limits may need to be reversed.

Notes

Use MEMCX for sourcing reference calibrating a measuring DUT.

Use MEMC for measuring reference calibrating a sourcing DUT.

The exception is a sourcing reference calibrating a analog measuring DUT.  In this case, since the reference ouput is slewed, MEMC makes sense, based on where MEM is coming from.

Read the MEMC/MEMCX help for the definition of the Nominal value, MEM, and MEM1.

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Bill Sierschula

Sorry for the late respond to the answers.  That is exactly the information I needed. I appreciate the help.

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